Reportable Segments and Major Concentration Data - Consolidated Net Revenues (Detail) - Customer Concentration Risk [Member] - Revenues [Member] - Segment Level [Member]	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Customer A [Member] | Diagnostics [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	8.00%	10.00%	12.00%
Customer B [Member] | Diagnostics [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	10.00%	11.00%	13.00%
Customer C [Member] | Diagnostics [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	11.00%	12.00%	7.00%
Customer D [Member] | Life Science [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	3.00%	3.00%	13.00%
Customer E [Member] | Life Science [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	10.00%	13.00%	11.00%
Customer F [Member] | Life Science [Member]
Entity Wide Portfolio Carrying Amount, Major Customer [Line Items]
Concentration percentage	18.00%	4.00%	0.00%